package com.sky.service.impl;

import com.sky.dto.GoodsSalesDTO;
import com.sky.entity.Orders;
import com.sky.mapper.OrderMapper;
import com.sky.mapper.UserMapper;
import com.sky.service.ReportService;
import com.sky.service.WorkspaceService;
import com.sky.vo.*;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.apache.poi.util.StringUtil;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.InputStream;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

@Service
@Slf4j
public class ReportServiceImpl implements ReportService {

    @Autowired
    private UserMapper userMapper;
    @Autowired
    OrderMapper orderMapper;
    @Autowired
    private WorkspaceService workspaceService;
    /**
     * 营业额统计
     * @param begin
     * @param end
     * @return
     */
    public TurnoverReportVO getTurnoverStatistics(LocalDate begin, LocalDate end) {
        //存放从begin到end
        List<LocalDate> dateList = new ArrayList<>();

        dateList.add(begin);
        while(!begin.equals(end)){
            begin = begin.plusDays(1);
            dateList.add(begin);
        }
        List<Double> turnoverList = new ArrayList<>();
        for (LocalDate date : dateList) {
            //查询data日期的营业额:状态为已完成的订单
            LocalDateTime beginTime = LocalDateTime.of(date, LocalTime.MIN);
            LocalDateTime endTime = LocalDateTime.of(date, LocalTime.MAX);
            Map map = new HashMap<>();
            map.put("begin",beginTime);
            map.put("end",endTime);
            map.put("status", Orders.COMPLETED);
            Double turnover = orderMapper.sumByMap1(map);
            turnover = turnover == null ? 0.0 : turnover;
            turnoverList.add(turnover);
        }

        return TurnoverReportVO.builder()
                .dateList(StringUtils.join(dateList,","))
                .turnoverList(StringUtils.join(turnoverList,","))
                .build();
    }

    public UserReportVO getUserStatistics(LocalDate begin, LocalDate end) {
        List<LocalDate> dateList = new ArrayList<>();
        dateList.add(begin);
        while (!begin.equals(end)){
            begin = begin.plusDays(1);
            dateList.add(begin);
        }
        List<Map> dateRanges = new ArrayList<>();
        List<Integer> newUserList = new ArrayList<>();
        List<Integer> totalUserList = new ArrayList<>();
        dateList.forEach(date->{
            //LocalDateTime beginTime = LocalDateTime.of(date, LocalTime.MIN);
            LocalDateTime endTime = LocalDateTime.of(date, LocalTime.MAX);
            Map map = new HashMap();
            //map.put("begin", beginTime);
            map.put("end", endTime);
            dateRanges.add(map);
        });
        totalUserList = userMapper.countByMap(dateRanges);
        /*totalUserList = totalUserList.stream()
                .map(value -> value == null? 0 : value)
                .collect(Collectors.toList());*/
        dateRanges.clear();
        dateList.forEach(date->{
            LocalDateTime beginTime = LocalDateTime.of(date, LocalTime.MIN);
            LocalDateTime endTime = LocalDateTime.of(date, LocalTime.MAX);
            Map map = new HashMap();
            map.put("begin", beginTime);
            map.put("end", endTime);
            dateRanges.add(map);
        });
        newUserList = userMapper.countByMap(dateRanges);
        /*newUserList = newUserList.stream()
                .map(value -> value == null? 0 : value)
                .collect(Collectors.toList());*/
        return UserReportVO
                .builder()
                .dateList(org.apache.commons.lang.StringUtils.join(dateList, ","))
                .newUserList(org.apache.commons.lang.StringUtils.join(newUserList, ","))
                .totalUserList(org.apache.commons.lang.StringUtils.join(totalUserList, ","))
                .build();

    }

    public OrderReportVO getOrdersStatistics(LocalDate begin, LocalDate end) {
        List<LocalDate> dateList = new ArrayList<>();
        dateList.add(begin);
        while (!begin.equals(end)){
            begin = begin.plusDays(1);
            dateList.add(begin);
        }
        List<Map> dateRanges = new ArrayList<>();
        dateList.forEach(date->{
            LocalDateTime beginTime = LocalDateTime.of(date, LocalTime.MIN);
            LocalDateTime endTime = LocalDateTime.of(date, LocalTime.MAX);
            Map map = new HashMap();
            map.put("begin", beginTime);
            map.put("end", endTime);
            dateRanges.add(map);
        });
        List<Integer> totalOrderList = orderMapper.countByMap(dateRanges);
        Integer orderCountList = 0;
        for (Integer t : totalOrderList) {
            if (t != 0)
                orderCountList += t;
        }
        dateRanges.clear();
        dateList.forEach(date->{
            LocalDateTime beginTime = LocalDateTime.of(date, LocalTime.MIN);
            LocalDateTime endTime = LocalDateTime.of(date, LocalTime.MAX);
            Map map = new HashMap();
            map.put("begin", beginTime);
            map.put("end", endTime);
            map.put("status", Orders.COMPLETED);
            dateRanges.add(map);
        });
        List<Integer> validOrderList = orderMapper.countByMap(dateRanges);
        Integer validOrderCount = 0;
        for (Integer v : validOrderList) {
            if (v != 0)
                validOrderCount += v;
        }
        return OrderReportVO
                .builder()
                .dateList(org.apache.commons.lang.StringUtils.join(dateList, ","))
                .totalOrderCount(orderCountList)
                .orderCountList(org.apache.commons.lang.StringUtils.join(totalOrderList, ","))
                .validOrderCount(validOrderCount)
                .validOrderCountList(org.apache.commons.lang.StringUtils.join(validOrderList, ","))
                .orderCompletionRate(validOrderCount * 1.0/orderCountList)
                .build();
    }


    public SalesTop10ReportVO getTop10(LocalDate begin, LocalDate end) {
        LocalDateTime beginTime = LocalDateTime.of(begin, LocalTime.MIN);
        LocalDateTime endTime = LocalDateTime.of(end, LocalTime.MAX);

        List<GoodsSalesDTO> list = orderMapper.getTop10(beginTime, endTime);


        List<String> nameList = list.stream().map(GoodsSalesDTO::getName).collect(Collectors.toList());
        List<Integer> numberList = list.stream().map(GoodsSalesDTO::getNumber).collect(Collectors.toList());

        return SalesTop10ReportVO
                .builder()
                .nameList(org.apache.commons.lang.StringUtils.join(nameList, ","))
                .numberList(org.apache.commons.lang.StringUtils.join(numberList, ","))
                .build();
    }

    public void exportBusinessData(HttpServletResponse response) {
        LocalDate dateBegin = LocalDate.now().minusDays(30);
        LocalDate dateEnd = LocalDate.now().minusDays(1);

        LocalDateTime begin = LocalDateTime.of(dateBegin, LocalTime.MIN);
        LocalDateTime end = LocalDateTime.of(dateEnd, LocalTime.MAX);

        BusinessDataVO businessData = workspaceService.getBusinessData(begin, end);

        InputStream in = this.getClass().getClassLoader().getResourceAsStream("template/运营数据报表模板.xlsx");
        try {
            XSSFWorkbook excel = new XSSFWorkbook(in);
            XSSFSheet sheet = excel.getSheetAt(0);
            sheet.getRow(1).getCell(1).setCellValue("时间：" + dateBegin + "至" +dateEnd);

            XSSFRow row = sheet.getRow(3);
            row.getCell(2).setCellValue(businessData.getTurnover());
            row.getCell(4).setCellValue(businessData.getOrderCompletionRate());
            row.getCell(6).setCellValue(businessData.getNewUsers());
            row = sheet.getRow(4);
            row.getCell(2).setCellValue(businessData.getValidOrderCount());
            row.getCell(4).setCellValue(businessData.getUnitPrice());

            for (int i = 0;i < 30; i++){
                LocalDate date = dateBegin.plusDays(i);
                BusinessDataVO data = workspaceService.getBusinessData(LocalDateTime.of(date, LocalTime.MIN),
                        LocalDateTime.of(date, LocalTime.MAX));
                row = sheet.getRow(7 + i);
                row.getCell(1).setCellValue(date.toString());
                row.getCell(2).setCellValue(data.getTurnover());
                row.getCell(3).setCellValue(data.getValidOrderCount());
                row.getCell(4).setCellValue(data.getOrderCompletionRate());
                row.getCell(5).setCellValue(data.getUnitPrice());
                row.getCell(6).setCellValue(data.getNewUsers());
            }

            ServletOutputStream out = response.getOutputStream();
            excel.write(out);

            excel.close();
            out.close();


        } catch (IOException e) {
            throw new RuntimeException(e);
        }




    }



}
